Longman Dictionary of Contemporary English homepage

Topic: GEOLOGY

Date: 1400-1500
Language: Old French
Origin: pomis, from Latin pumex 'foam'

pumice

noun
     
pum‧ice also pumice stone
1 [uncountable]HEG very light grey rock from a volcano that is crushed to a powder and used for cleaning
2 [countable]DCB a piece of pumice stone that you rub on your skin to clean it or make it soft
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